To suddenly start crying
अचानक रोने लगना
English Usage: When she heard the sad news, she burst out crying.
Hindi Usage: जब उसने दुखद समाचार सुना, तो वह फूट-फूट कर रोने लगी।
phoot-phoot kar rona, foot-foot kar rona, phoot phoot kar rona, fhoot-fhoot kar rona, phut-phut kar rona